3Com Switch 4200G Configuration Guide

256 CHAPTER 29: IGMP SNOOPING CONFIGURATION
■ You cannot set the isolate VLAN as a multicast VLAN.
■ One port can belong to only one multicast VLAN.
■ The port connected to a user end can only be as set as a hybrid port.
Displaying
Information About
IGMP Snooping
You can execute the following display commands in any view to display information
about IGMP Snooping.
IGMP Snooping
Configuration
Example
Example 1 Configure IGMP Snooping on a switch.
Network requirements
Connect the router port on the switch to the router, and other non-router ports
which belong to VLAN 10 to user PCs. Enable IGMP Snooping on the switch.
Network diagram
Figure 81 Network diagram for IGMP Snooping configuration
Configuration procedure
1 Enable IGMP Snooping in system view.
<S4200G> system-view
System View: return to User View with Ctrl+Z.
[4200G] igmp-snooping enable
Table 229 Display information about IGMP Snooping
Operation Command Description
Display the current IGMP
Snooping configuration
display igmp-snooping configuration You can execute the
display commands in any
view.
Display IGMP Snooping
message statistics
display igmp-snooping statistics
Display IP and MAC
multicast groups in one or
all VLANs
display igmp-snooping group [
vlan vlanid ]
Clear IGMP Snooping
statistics
reset igmp-snooping statistics You can execute the reset
command in user view.
Internet
Multicast
Switch
Router